8868540645 has 24 divisors (see below), whose sum is σ = 15411684600. Its totient is φ = 4717719936.

The previous prime is 8868540641. The next prime is 8868540649. The reversal of 8868540645 is 5460458688.

It is an interprime number because it is at equal distance from previous prime (8868540641) and next prime (8868540649).

It can be written as a sum of positive squares in 4 ways, for example, as 1590573924 + 7277966721 = 39882^2 + 85311^2 .

It is not a de Polignac number, because 8868540645 - 2² = 8868540641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8868540591 and 8868540600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8868540641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235810 + ... + 270819.

It is an arithmetic number, because the mean of its divisors is an integer number (642153525).

Almost surely, 2^8868540645 is an apocalyptic number.

It is an amenable number.

8868540645 is a deficient number, since it is larger than the sum of its proper divisors (6543143955).

8868540645 is a wasteful number, since it uses less digits than its factorization.

8868540645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507029 (or 507026 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The square root of 8868540645 is about 94172.9294702039. The cubic root of 8868540645 is about 2069.9064615018.

The spelling of 8868540645 in words is "eight billion, eight hundred sixty-eight million, five hundred forty thousand, six hundred forty-five".